Artificial intelligent assistant

undoubtous

unˈdoubtous, a. Obs.—1
  [un-1 7.]
  Undoubtful, undoubted.

c 1374 Chaucer Boeth. v. pr. i. (1868) 149 Syn it nis nat to douten of þe þinges folwynge whan euery side of þi disputisoun shal be stedfast to me by vndoutous [L. indubitata] feiþ.

Oxford English Dictionary

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